{"schemaVersion":3,"id":"CVE-2026-55864","aliases":["GHSA-5hx7-j24v-rffj"],"status":"published","duplicateOf":null,"title":null,"description":"GeoNetwork is a catalog application to manage spatially referenced resources. Prior to 4.2.17 and 4.4.12, POST /api/tools/ogc/sld accepted a caller-supplied WMS server URL and performed a server-side HTTP GET without destination validation. An anonymous attacker could make the GeoNetwork server send requests to internal hosts that are not publicly reachable. When the outbound response was XML, the endpoint could store and return the fetched body, making the request forgery non-blind and enabling internal data disclosure, authorization bypass, and network reconnaissance. This issue is fixed in versions 4.2.17 and 4.4.12.","dates":{"published":"2026-09-15T15:37:01.267Z","modified":"2026-09-16T15:42:11.167Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.8,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":7.8,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Maven","score":7.7,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":7.8,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00587,"percentile":0.47306,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00587},"history":[{"date":"2026-09-16T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00587,"percentile":0.47306}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00587,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00587,"percentile":0.47306}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-918","name":"Server-Side Request Forgery (SSRF)","description":"The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/918.html"}],"affected":[{"vendor":"geonetwork","product":"core-geonetwork","name":"core-geonetwork","label":"core-geonetwork","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 4.0.0, < 4.2.17","noFixRecorded":false,"fixedIn":null},{"text":"≥ 4.4.0, < 4.4.12","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 4.0.0, < 4.2.17 | ≥ 4.4.0, < 4.4.12","eol":null,"hubHref":"/vendor/geonetwork/core-geonetwork"},{"vendor":"org.geonetwork-opensource","product":"gn-web-app","name":"org.geonetwork-opensource:gn-web-app","label":"gn-web-app","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/org.geonetwork-opensource/gn-web-app","purlType":"maven","versions":[{"text":"≥ 4.4.0, < 4.4.12","noFixRecorded":false,"fixedIn":null},{"text":"≥ 4.0.0, < 4.2.17","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 4.4.0, < 4.4.12 | ≥ 4.0.0, < 4.2.17","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/geonetwork/core-geonetwork/security/advisories/GHSA-5hx7-j24v-rffj","label":"github.com/geonetwork/core-geonetwork/security/advisories/GHSA-5hx7-j24v-rffj","hostname":"github.com","tags":["X Refsource CONFIRM","WEB"]},{"url":"https://github.com/geonetwork/core-geonetwork/pull/9343","label":"github.com/geonetwork/core-geonetwork/pull/9343","hostname":"github.com","tags":["X Refsource MISC","WEB"]},{"url":"https://github.com/geonetwork/core-geonetwork/pull/9344","label":"github.com/geonetwork/core-geonetwork/pull/9344","hostname":"github.com","tags":["X Refsource MISC"]},{"url":"https://github.com/geonetwork/core-geonetwork/commit/17fdae28a5a51996bf5ff7f7e8236332c74eab77","label":"github.com/geonetwork/core-geonetwork/commit/17fdae28a5a51996bf5ff7f7e8236332c74eab77","hostname":"github.com","tags":["X Refsource MISC"]},{"url":"https://github.com/geonetwork/core-geonetwork/commit/a80d535c842e6af589d0bac37e7fe4ba01193757","label":"github.com/geonetwork/core-geonetwork/commit/a80d535c842e6af589d0bac37e7fe4ba01193757","hostname":"github.com","tags":["X Refsource MISC"]},{"url":"https://github.com/geonetwork/core-geonetwork/releases/tag/4.2.17","label":"github.com/geonetwork/core-geonetwork/releases/tag/4.2.17","hostname":"github.com","tags":["X Refsource MISC"]},{"url":"https://github.com/geonetwork/core-geonetwork/releases/tag/4.4.12","label":"github.com/geonetwork/core-geonetwork/releases/tag/4.4.12","hostname":"github.com","tags":["X Refsource MISC"]},{"url":"https://github.com/geonetwork/core-geonetwork","label":"github.com/geonetwork/core-geonetwork","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-09-15T15:37:01.267Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-16T15:42:11.167Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":31,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T11:44:49.653Z","stale":false,"partial":false}}